/* Atout — mise en page : en-tête collant, colonne centrale de 1080px, pages construites par app.js.
   Identité : le tapis de jeu (vert profond) comme couleur d'accent, le papier légèrement teinté de vert. */
:root {
  --paper: #F4F6F2;
  --surface: #FFFFFF;
  --sunk: #EAEFE9;
  --ink: #15211B;
  --muted: #56655D;
  --line: #D5DDD6;
  --felt: #1D5B41;
  --felt-ink: #FFFFFF;
  --felt-soft: #DFEDE5;
  --felt-deep: #12382A;
  --red: #B42A20;
  --good: #1E7A4C;
  --bad: #B42A20;
  --warn: #8F6200;
  --warn-soft: #F7EBD0;
  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --radius: 10px;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0D1411; --surface: #141E19; --sunk: #101914; --ink: #E5EDE8; --muted: #94A49B; --line: #25332C;
    --felt: #5DB38D; --felt-ink: #0D1411; --felt-soft: #19302A; --felt-deep: #0F2A20;
    --red: #F07A70; --good: #5DC48E; --bad: #F07A70; --warn: #E3B654; --warn-soft: #2C2413;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0D1411; --surface: #141E19; --sunk: #101914; --ink: #E5EDE8; --muted: #94A49B; --line: #25332C;
  --felt: #5DB38D; --felt-ink: #0D1411; --felt-soft: #19302A; --felt-deep: #0F2A20;
  --red: #F07A70; --good: #5DC48E; --bad: #F07A70; --warn: #E3B654; --warn-soft: #2C2413;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.55 var(--f-body); font-variant-emoji: text; }
h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; margin: 0; line-height: 1.12; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); font-weight: 700; }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 500; }
p { margin: 0; }
a { color: var(--felt); }
.red { color: var(--red); }
.muted { color: var(--muted); }
.eyebrow { font: 500 .74rem var(--f-mono); letter-spacing: .09em; text-transform: uppercase; color: var(--muted); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 58ch; }
.prose { display: flex; flex-direction: column; gap: 14px; max-width: 65ch; }

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }

/* ---------- En-tête ---------- */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--surface); }
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 700 1.3rem var(--f-display); }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; background: var(--felt); color: var(--felt-ink); font-size: 1.15rem; }
.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.site-nav a { text-decoration: none; color: var(--ink); font-weight: 600; padding: 8px 10px; border-radius: 8px; white-space: nowrap; }
.site-nav a:hover { background: var(--sunk); }
.site-nav a[aria-current="page"] { color: var(--felt); background: var(--felt-soft); }
.site-nav a.btn { color: var(--felt-ink); margin-left: 6px; }
.site-header .menu-toggle { display: none; margin-left: auto; }
@media (max-width: 1100px) {
  .site-header .menu-toggle { display: inline-flex; }
  .site-nav { display: none; width: 100%; flex-direction: column; align-items: stretch; padding-bottom: 14px; margin-left: 0; }
  .site-nav.open { display: flex; }
  .site-nav a.btn { margin: 6px 0 0; justify-content: center; }
}

/* ---------- Pied de page ---------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 72px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; padding-block: 28px; color: var(--muted); font-size: .95rem; }
.footer-inner nav { display: flex; gap: 16px; margin-left: auto; }

/* ---------- Boutons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 1rem var(--f-body); cursor: pointer; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: 11px 18px; text-decoration: none; line-height: 1.2; }
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--felt); border-color: var(--felt); color: var(--felt-ink); }
.btn-primary:hover { background: var(--felt-deep); border-color: var(--felt-deep); color: #FFFFFF; }
.btn-sm { padding: 8px 14px; font-size: .95rem; }
.btn:disabled { cursor: default; opacity: .5; }
.link { background: none; border: none; padding: 0; color: var(--felt); font: 600 1rem var(--f-body); cursor: pointer; text-decoration: none; }
.link:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--felt); outline-offset: 2px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* ---------- Pages ---------- */
.page { padding-block: 40px 0; display: flex; flex-direction: column; gap: 56px; }
.page:focus { outline: none; }
.page-head { display: flex; flex-direction: column; gap: 12px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: .95rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
section { display: flex; flex-direction: column; gap: 20px; }

/* ---------- Accueil ---------- */
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero-text { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.hero h1 em { font-style: normal; color: var(--felt); }
.table-felt { background: var(--felt-deep); border-radius: 16px; padding: 22px; display: flex; flex-direction: column; gap: 14px; color: #E9F2EC; min-width: 0; }
.table-felt .eyebrow { color: #A9C9B8; }
.table-felt .ex { background: var(--surface); color: var(--ink); }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.fact { background: var(--surface); padding: 18px; display: flex; flex-direction: column; gap: 2px; }
.fact b { font: 700 1.6rem var(--f-display); font-variant-numeric: tabular-nums; }
.fact span { color: var(--muted); font-size: .95rem; }
.how { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.how-step { display: flex; flex-direction: column; gap: 8px; border-top: 2px solid var(--felt); padding-top: 14px; }
.how-step .n { font: 500 .8rem var(--f-mono); color: var(--felt); }
.series-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.series-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.series-card ol { margin: 0; padding-left: 1.3em; color: var(--muted); display: flex; flex-direction: column; gap: 2px; }
.series-card .row { margin-top: auto; }
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .how, .series-cards { grid-template-columns: 1fr; }
}

/* ---------- Progression (barres, pastilles, tuiles) ---------- */
.bar { height: 8px; border-radius: 99px; background: var(--sunk); overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--felt); border-radius: 99px; }
.pill { font: 500 .74rem var(--f-mono); padding: 3px 10px; border-radius: 999px; white-space: nowrap; border: 1px solid transparent; }
.pill.sue { background: var(--felt-soft); color: var(--good); }
.pill.afaire { color: var(--muted); border-color: var(--line); }
.pill.reprendre { color: var(--warn); background: var(--warn-soft); }
.pill.next { color: var(--felt-ink); background: var(--felt); }
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; gap: 4px; }
.tile b { font: 700 2rem var(--f-display); font-variant-numeric: tabular-nums; }
@media (max-width: 640px) { .tiles { grid-template-columns: 1fr; } }

/* ---------- Parcours ---------- */
.series-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; align-items: end; }
.series-head .bar { width: 220px; max-width: 100%; }
.lesson-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.lesson-list li { border-bottom: 1px solid var(--line); }
.lesson-link { display: grid; grid-template-columns: 3ch 1fr auto; gap: 18px; align-items: center; padding: 16px 8px; text-decoration: none; color: var(--ink); border-radius: 8px; }
.lesson-link:hover { background: var(--surface); }
.lesson-link .num { font: 700 1.5rem var(--f-display); color: var(--felt); text-align: right; font-variant-numeric: tabular-nums; }
.lesson-link .txt { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lesson-link .t { font-weight: 600; }
.lesson-link .s { color: var(--muted); font-size: .95rem; }

/* ---------- Leçon ---------- */
.lesson-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; align-items: start; }
.lesson-aside { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 84px); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.lesson-aside ul { margin: 0; padding-left: 1.1em; display: flex; flex-direction: column; gap: 6px; }
@media (max-width: 860px) { .lesson-layout { grid-template-columns: 1fr; } .lesson-aside { position: static; } }
.cours { display: flex; flex-direction: column; gap: 26px; max-width: 65ch; }
.rule-box { border-left: 3px solid var(--felt); padding: 2px 0 2px 16px; display: flex; flex-direction: column; gap: 8px; }
.rule-box ul { margin: 0; padding-left: 1.15em; display: flex; flex-direction: column; gap: 4px; }
.example { background: var(--sunk); border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; gap: 12px; }
.scroll-x { overflow-x: auto; }
.table { border-collapse: collapse; font-variant-numeric: tabular-nums; min-width: 100%; }
.table th, .table td { text-align: left; padding: 9px 16px 9px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { font: 500 .74rem var(--f-mono); letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
.lesson-pager { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 20px; }

/* ---------- Exercices ---------- */
.session { display: flex; flex-direction: column; gap: 22px; max-width: 760px; }
.session-progress { display: flex; flex-direction: column; gap: 8px; }
.session-progress .row { justify-content: space-between; font: 500 .85rem var(--f-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.ex { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px; display: flex; flex-direction: column; gap: 18px; }
.ex-tag { font: 500 .74rem var(--f-mono); color: var(--felt); letter-spacing: .06em; text-transform: uppercase; }
.deal { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-start; }
.hand { display: grid; grid-template-columns: auto 1fr; gap: 3px 14px; font: 500 1.3rem var(--f-mono); padding: 12px 18px; border-radius: 10px; background: var(--felt-soft); border: 1px solid var(--line); min-width: 0; }
.hand .s { text-align: center; }
.hand .void { color: var(--muted); }
.auction { display: flex; flex-wrap: wrap; gap: 6px; align-items: stretch; }
.call { display: flex; flex-direction: column; gap: 1px; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); min-width: 4.2rem; }
.call small { font: 500 .66rem var(--f-mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.call b { font: 600 1.1rem var(--f-mono); }
.call.you { border-color: var(--felt); }
.call.ask { background: var(--felt); border-color: var(--felt); color: var(--felt-ink); }
.call.ask small { color: inherit; opacity: .8; }
.auction-note { font-size: .85rem; color: var(--muted); width: 100%; }
.step { display: flex; flex-direction: column; gap: 10px; border-top: 1px dashed var(--line); padding-top: 16px; }
.step .q { font-weight: 600; }
.count { display: flex; gap: 8px; flex-wrap: wrap; }
.count input { width: 7rem; font: 500 1.1rem var(--f-mono); padding: 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); }
.choices { display: flex; gap: 8px; flex-wrap: wrap; }
.choices .btn { font-family: var(--f-mono); font-weight: 500; min-width: 4.2rem; justify-content: center; }
.choices .btn.good { border-color: var(--good); color: var(--good); border-width: 2px; }
.choices .btn.bad { border-color: var(--bad); color: var(--bad); border-width: 2px; }
.choices .btn.expected { border: 2px dashed var(--good); }
.fb { border-radius: 8px; padding: 12px 14px; display: flex; flex-direction: column; gap: 4px; }
.fb.ok { background: var(--felt-soft); }
.fb.ko { border: 1px solid var(--bad); }
.fb .verdict { font-weight: 700; }
.fb.ok .verdict { color: var(--good); }
.fb.ko .verdict { color: var(--bad); }
.fb .detail { color: var(--muted); }
@media (prefers-reduced-motion: no-preference) {
  .fb { animation: rise .18s ease-out; }
  @keyframes rise { from { opacity: .4; transform: translateY(-3px); } to { opacity: 1; transform: none; } }
}

/* ---------- Résultats ---------- */
.result { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; max-width: 760px; }
.score { font: 700 clamp(3rem, 8vw, 4.5rem) var(--f-display); font-variant-numeric: tabular-nums; line-height: 1; }
.recap { list-style: none; margin: 0; padding: 0; width: 100%; border-top: 1px solid var(--line); }
.recap li { display: grid; grid-template-columns: 1.6rem 1fr; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.recap .mk { font-weight: 700; }
.recap .mk.ok { color: var(--good); }
.recap .mk.ko { color: var(--bad); }

/* ---------- Entraînement ---------- */
.options { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.option { position: relative; display: flex; flex-direction: column; gap: 4px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 16px 16px 46px; cursor: pointer; }
.option input { position: absolute; left: 16px; top: 19px; accent-color: var(--felt); width: 18px; height: 18px; }
.option:has(input:checked) { border-color: var(--felt); box-shadow: 0 0 0 1px var(--felt); }
.option.disabled { opacity: .5; cursor: default; }
.option span { color: var(--muted); font-size: .95rem; }
.confirm { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; background: var(--warn-soft); border-radius: var(--radius); padding: 14px 16px; }

/* ---------- Comptes ---------- */
.auth-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 24px; display: flex; flex-direction: column; gap: 18px; max-width: 460px; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; background: var(--sunk); border-radius: 10px; padding: 4px; }
.tab { font: 600 .98rem var(--f-body); border: none; background: none; color: var(--muted); padding: 9px 10px; border-radius: 7px; cursor: pointer; }
.tab[aria-selected="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0, 0, 0, .08); }
.form { display: flex; flex-direction: column; gap: 16px; max-width: 460px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-weight: 600; }
.field input { font: 1rem var(--f-body); padding: 11px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); width: 100%; }
.check { display: flex; gap: 10px; align-items: flex-start; }
.check input { margin-top: 4px; accent-color: var(--felt); width: 18px; height: 18px; flex: none; }
.notice { border-radius: 8px; padding: 12px 14px; }
.notice.ok { background: var(--felt-soft); }
.notice.ko { border: 1px solid var(--bad); color: var(--bad); }

/* ---------- Choix de la langue ---------- */
.lang-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-left: 6px; }
.lang-switch button { font: 500 .8rem var(--f-mono); letter-spacing: .04em; border: none; background: var(--surface); color: var(--muted); padding: 7px 10px; cursor: pointer; }
.lang-switch button + button { border-left: 1px solid var(--line); }
.lang-switch button[aria-pressed="true"] { background: var(--felt-soft); color: var(--felt); }
@media (max-width: 1100px) { .lang-switch { align-self: flex-start; margin: 8px 0 0 12px; } }

/* ---------- Choix du système d'enchères ---------- */
.sys-select { font: 600 .9rem var(--f-body); color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 7px 6px; margin-left: 6px; cursor: pointer; }
@media (max-width: 1100px) { .sys-select { margin: 8px 0 0 12px; align-self: flex-start; max-width: none; } }

/* ---------- Cartes de révision et consolidation ---------- */
.carte { min-height: 14rem; }
.carte-recto { font: 600 1.35rem/1.35 var(--f-display); text-wrap: balance; }
.carte-verso { border-top: 1px dashed var(--line); padding-top: 14px; display: flex; flex-direction: column; gap: 6px; }
.carte-reponse { font: 700 1.2rem/1.4 var(--f-body); color: var(--felt); }
a.option { text-decoration: none; color: var(--ink); padding-left: 16px; }
a.option:hover { border-color: var(--felt); }
a.option.situation { gap: 8px; }